add hiera_data for rbd in glance and cinder

Signed-off-by: Loic Dachary <loic@dachary.org>
adding image-builder
Merge pull request #150 from dachary/wip-ceph

add hiera_data for rbd in glance and cinder
Merge pull request #151 from michaeltchapman/docu

Added more doc on stack-builder data flow
Update HA role mappings

1. add individual mappings for all controllers
2. replace hostname _ with - for consistency
Rename 13_role to full_ha

13 role was a pretty bad name b/c it never had
13 separate roles.
Merge pull request #152 from bodepd/update_ha_roles

Update HA role mappings
Merge pull request #153 from bodepd/rename_13_role_full_ha

Rename 13_role to full_ha
Add ability to change public network name
Fix curl command in readme